Rotary explosion-engine.



P. M. RODIGIN. ROTARY EXPLOSION ENGINE.

APPLICATION FILED JUNE 22, 1910,

1,003,800. Patented Sept. 19,1911.

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P. M. RODIGIN. ROTARY EXPLOSION ENGINE. APPLICATION YILBD 511N322, 1910.

Patented Sept. 19,1911.

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l' ed together, and having UNITED STATES PATENT. OFFICE.

JFANTALEON MICH AILOWITSH ROIDIGIN, 0F BEBDIAITSK, RUSSIA.

' noranv EXPLOSION-ENGINE.

To all whom it may concern:

Be it known that I, PAN'IALEON M. Rour- GIN, a subject of the Czar of Russia, residing at Berdiansk,-on the Sea of Azof', Russia,

. 5 have invented certain new' and useful .Im-

v provements in Rotary Explosion-Engines; and I do hereby declare the following to be a full, clear, and exact description of the invent1on,'such,as will enable others skilled 1n the art to which it appertains to make and use the same.

My invention relates to improvements in rotary explosionengines, and the object of my invention is to make a 'simple rotary engine of the four cycle type, driven by the expleosion of vapor char ed air, one that will qnexpenslve to buil very light, and effective 1n action. I Y

Withthese objects in .view, my invention consists in the Construction and combinations of parts as hereinafter described and claimed.

In the accompanying drawingFFigure 1 is a side view ofone embodiment of my invention, one half of the casing being removed. Fig. 2 is a central cross-section thereof, taken on the lines 2-2 of Figs. 1 and 3. Fig. 3 is a side view of the same, the shaft being shown in section. Fig. 4 is an edge view of the same. Fig. 5 is a side view of the same, on a larger scale, parts being broken away and parts shown in'section. Fig. 6 is a cross-section takenon the line 6-6 of Fig. 5. Fig. 7 is a side view of the disk that is keyed to the shaft. Fig. 8 is a cross-section thereof on the line 88 of Fig. 7. Fi 9 is a side view of the loosely mounted dis partly broken away. Fig. 10 is a cross-section of the same on the line. 1010 of Fig. 9, and Fig. 11 is a plan view thereof.

1 represents the driven shaft, and keyed I to thisshaft is a disk 2. This disk is providedwith two arcuate slots F therein and two radially projecting arms 3, perforated at their ends, as shown in Fig. 7, and-on these projections 3 are pivotally mounted pistons. "A disk 2' is loosely mounted on the shaft .1 adjacent the disk 2 and has a pair of similar arms 3 carrying. pistons A. These pistons are adapted to rotate in an annular cylinder composed of two parts K, boltan annular groove and rib connection, as s own at L, Fig. 6,so

with the Specification of Letters Patent. Patented Sept. 19, 1911 Application filed .Tunev22, 1910. Serial No. 568,415. I I i hereinafter described. The disk 2 base circular projecting flange 5, fitting against the edge 5' of one of the casing sections K (Fi 6), and a pack1ng ring M, of any suitable mater1al, 1s used to form a tight joint between sa1d cylinder section and the disk 2. A slmllar packing ring is used with the loose disk 2.. These disks are provided with interlocking grooves and projections 6 and 7, as shown in Figs. 7 to 10, to make the fit between them perfectly tight. The loosel mounted disk 2 is provided with pinsiG fitting in the slots F of the keyed disk, so that while a certain amount of relative movement is allowed between the disks, the distance between the piston arms 3 and 3 on the respective disks has a maximum and acollar 8, havin ribs 10. ,Within 0 annel 9 is mounted a hand brake 11 of any'usual or well known type. H represents a spring, which is fastened at one end to the shaft 1 and at the other end to the cylindrical collar 8.

The disks 2 and 2 fit closely circular-ribs or lugs of the one engaging in the grooves of the other. Each of the disks may have mounteduthereon as many pistons as desired, but the number ofpistons should be the same on the one disk as on the other. In the drawing, however, I have shown only two pistons mounted on each disk, these pistons traveling in the annular cylindrical space within the. casing. The collar 8 on the disk 2 is provided with an annular flange or ring 10', and in the spacebetween this flange and the main portion of the disk are mountedradial-ly movable bolts or stops E. These stops as shown in Fig. 5, are normally pressed outward by means of the springs 11' and have beveled heads E so that they present a square shoulder on one side and an inclined portion on the other. The internal edge of one section of the casing K is cut away at inte'rvals,'to provlde recesses 12 (Fig. 5) having each a square shoulder and a sloping face into whlch' the heads E snap at intervals, providln stops to prevent backward rotation of the 1sk 2.

The pistoncasing is provlded at intervals on one side with inlet ipes C and on theother side with outlet plpes D, closed 1n opther, I pins G in the slots F and with the the sections K there is a space forthe recep- 'th t th ill fit .t' htl t ether. Between ey w y 0g posite directions by suitable valves (see Fig.

4:); The inlet pipes G are connected to any tion of the keyed disk2 and the loose disk 2 suitable supply of carbureted air,'and the outlet pipes D may be connected to any suitable common exhaust pipe. I have shown in the drawing three of these inlet and outlet devices, but as many may be used as desired, depending usually on the size of the engine.

At equal distancesbetween the pipes C in the annular casing, are located igniting devices 13 B and B disposed into the casing K at an angle of about forty-five degrees (Fig. 6) from the horizontal.

Any usual carbureting and lubricating means can be employed, and the currents for the'sparking plugs may be supplied by a magneto-electric generator driven from the main shaft 1 and provided with a commutator, so that the ignition plugs at the points B 13?, and B shall be operated at the proper times. The character J (Fig, represents the point where the current 15 led from the magneto machine to the commutator for the three sparking plugs.

In view of the fact that motors, especially those intended to be used for flying machines, must be very small and comparatively light, and without any means for cooling the cylinder by water, the casing sections K are made as thin as possible to permit the ready conduction of heat, and to prevent fracture ribs N are provided thereon at intervals, which also aid in the cooling effect.

The operation is as follows :The engine may be turned partially by hand, the loose disk being checked by means of the band brake 11. This separates each pair of pistons A and A, thelatter being stationary, tensions the spring H, and sucks in a charge of carbureted air. The brake is then set free, whereupon the spring H acts, bringing the pistons A toward the pistons A and compressing the charge between the pistons.

When the pistons A are at their minimum distance from the pistons A, the'charge between them is ignited, current to the sparking plugs being supplied by a battery in the usual way. ;An explosion then takes place i and the pistons A will be forced forward, carrying with them the shaft 1, the pistons A being prevented from backward rotation by the stop or abutments E engaging in the notches 19..

one of'thc pipes D. As soon as the pistons A pass the pipes C, they begin to suck in a 'new charge, and when there is a suction pe riod between two of the pistons there is an explosive'pressure between theopposite pair, and by reason of which the pistons A are caused to lag with respect to the pistons A.

As soon as the pistons A pass the first exhaust valves, at whichtime bination of an annular cylindrical casing, a I

shaft passing centrallytherethrough, a disk keyed to said shaft, a plurality of pistons carried by said disk and adapted to rotate in said casing, a disk loosely mounted on said shaft and provided with a plurality of pistons also adapted to rotate in said cylindrical casmg, a spring connecting said second named disk to said shaft, and springpressed abutments preventlngthe backward motion of saidloose disk, substantially as described.

2. In a rotary explosion engine, the com-- bination of an annular cylindrical casing provided with inlet and exhaust pipes and sparking plugs, a shaft passing horizontally. through the center of said casing, a disk keyed to said shaft, said disk having a plurality of pistons thereon, adapted to rotate in said cylindrical casing, and having a curved slot; a disk loosely mounted on said shaft and provided with a plurality of pistons adapted to rotate in said cylindrical casing, a spring connecting said last named disk to said shaft, said last named disk being provided with a pin engaging in the groove of said'first named disk, and means for preventing the backward rotation of said loose disk, substantially as described.

3. In a rotary explosion engine, the com bination of an annular cylindrical casing, a shaft passing centrally through said casing, a disk keyed to said shaft, a disk loosely mounted on said shaft, each of said disks being provided with projecting arms, pistons pivotally mounted on the arms of these two disks opposite to each other, one of said disks being provided with a curved slot and the other with a pin entering said slot, and means for preventing the backward rotation of said second named disk, substantially as described.

4. In a rotary explosion engine, the combination of an annular cylindrical casing, a shaft centrally located insaid casing, a disk keyedlto said shaft, a disk loosely mounted on said shaft, pistons carried by each of said disks and adapted to rotate in said cylindrical casing, and means for preventing the backward movement of said second named disk when'an explosion occurs, substantially as described.

5. In a rotary explosion engine, the com-- bination of an annular cylindrical casing, a shaft centrally mounted therein, a disk keyed to said shaft, a disk loosely mounted on said shaft, one of said disks being provided with a curved groove and the other with a pin entering said groove, and means for preventing the backward rotation of said second named disk when an explosion occurs, substantially as described.

6. In a rotary explosion engine, the combination of an annular cylindrical casing comfposed of two parts bolted together," a sha t' centrally mounted in said casing, a

disk keyed to said shaft and provided with a pluralit of pistons adapted to rotate in said annu ar casing, a disk looselymounted on said shaft and provided with a plurality of pistons cooperating with said' first named pistons, one of said disks being provided with a groove and the other with a pin entering said groove, means for preventing the backward movement of said second naiihed disk when an explosion occurs, a spring con-- nected to said shaft and to said second named disk, and a band brake en ag'ing said second named disk, substant-ia ly as described. PANTALEON MIOHAILOWITSH RODIGIN. Witnesses: .+J.'S1". OLA-m CARALLI,

IVAN Kos'mnno.

Copies of this patent-{may be obtained for five cents each, by addressing the Commissioner of Patents 4 Washington, D. 0. 

